77.81.192.0/20 covers 77.81.192.0 to 77.81.207.255, 4,096 IPv4 addresses. It is announced by AS57218 (Rightel Communication Service Company PJS). Every sampled address geolocates to Iran, with 100% in Tehran. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.